Vocabulary
What is the basic unit of all matter?
Atom
Where are neutrons located?
Inside the nucleus
What element has an atomic number of 1?
Hydrogen
A combination of elements bonded together
Molecule
Where are electrons located in an atom?
They spin around the outside of the nucleus of an atom.
How many protons does Carbon have?
6
What is the chart called that organizes all the elements?
Periodic table
Why are atoms important?
They are the basic building blocks of all matter.
What element is He?
Helium
What is the difference between a proton and electron?
Protons have a positive charge and electrons have a negative charge.
What is the difference between an element and a compound?
Elements are made from one single type of atom and compounds are made up of 2 or more elements.
Name 5 elements from the periodic table?
Hydrogen, oxygen, helium, sodium, chloride, lithium.....
What is the chemical formula for carbon dioxide?
CO2
What is the chemical formula for Sodium Chloride? (table salt)
NaCl
They are organized by periods and groups.